activity
20232026
most citedFull Eigenstate Thermalization via Free Cumulants in Quantum Lattice Systems

27 citations · 59 across the 14 of their papers we have counts for

collaborators

14 papers

quant-ph2026

Extracting the physical content of Liouvillian eigenmodes: Semiclassical quantization

Ashlin V Thomas, Felix Fritzsch, Masudul Haque +1

Unlike in closed quantum systems where individual energy eigenstates are understood as physical excitations, open quantum systems have distinct right and left eigenstates of the Li…

quant-ph2026

Semiclassical foundation of universality in chaotic quantum circuits

Maximilian F. I. Kieler, Felix Fritzsch, Arnd Bäcker

The fundamental correspondence between quantum chaotic single-particle systems and random matrix theory is well-understood via periodic orbit theory. In contrast, we show that many…

quant-ph2026

Timescales for Deep and Full Thermalization

Tabea Herrmann, Felix Fritzsch, Arnd Bäcker

Isolated quantum systems typically approach thermal equilibrium as described by the Eigenstate Thermalization Hypothesis (ETH). Going beyond this involves either higher order corre…

quant-ph2025

Free Cumulants and Full Eigenstate Thermalization from Boundary Scrambling

Felix Fritzsch, Gabriel O. Alves, Michael A. Rampp +1

Out-of-time-order correlation functions (OTOCs) and their higher-order generalizations present important probes of quantum information dynamics and scrambling. We introduce a solva…

quant-ph2025

Sampling Continuous Quantum Dynamics from a Single Static State

Sebastian Gemsheim, Felix Fritzsch

While quantum simulation is one of the most promising applications of modern quantum devices, accessible simulation times are fundamentally limited by finite coherence times due to…

quant-ph2025

Free Probability in a Minimal Quantum Circuit Model

Felix Fritzsch, Pieter W. Claeys

Recent experimental and theoretical developments in many-body quantum systems motivate the study of their out-of-equilibrium properties through multi-time correlation functions. We…